Corruption on the migrant trail in Mexico

State police in Chiapas, which borders Guatemala, look at the tattoos of a migrant from Honduras to make sure he isn't part of a gang that preys on those riding the train north to the United States.

State police in Chiapas, which borders Guatemala, look at the tattoos of a migrant from Honduras to make sure he isn't part of a gang that preys on those riding the train north to the United States. (Michael Robinson Chavez / Los Angeles Times)

State police in Chiapas, which borders Guatemala, look at the tattoos of a migrant from Honduras to make sure he isn't part of a gang that preys on those riding the train north to the United States.